FI955584A - Identification of audio activity - Google Patents

Identification of audio activity Download PDF

Info

Publication number
FI955584A
FI955584A FI955584A FI955584A FI955584A FI 955584 A FI955584 A FI 955584A FI 955584 A FI955584 A FI 955584A FI 955584 A FI955584 A FI 955584A FI 955584 A FI955584 A FI 955584A
Authority
FI
Finland
Prior art keywords
vector
standard
value
indicator
identification
Prior art date
Application number
FI955584A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI955584A0 (en
Inventor
Jamil Chaoui
Ivan Bourmeyster
Francois Robbe
Original Assignee
Alcatel Mobile Comm France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Mobile Comm France filed Critical Alcatel Mobile Comm France
Publication of FI955584A0 publication Critical patent/FI955584A0/en
Publication of FI955584A publication Critical patent/FI955584A/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Complex Calculations (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Cosmetics (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The detector calculates autocorrelation coefficients, R(k) for a signal. A first vector (RO) is composed from a first series, K = 0 ... (N-q), and a second vector (Rq) is formed from the components, k = q ...N. which are shifted by q relative to the first. The first vector is subtracted from the second to yield a difference vector, delta, R, from which a first standard vector is obtained. A reduced standard is obtained by dividing the first standard vector by a reduction value to give a second indicator. The reduction value is calculated from the energy of the audio signal or the sum of the audio energy and a bottom value, C. The linear combination of the present and previous value give a third indicator and these are measured against a threshold.
FI955584A 1994-11-22 1995-11-20 Identification of audio activity FI955584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9413962A FR2727236B1 (en) 1994-11-22 1994-11-22 DETECTION OF VOICE ACTIVITY

Publications (2)

Publication Number Publication Date
FI955584A0 FI955584A0 (en) 1995-11-20
FI955584A true FI955584A (en) 1996-05-23

Family

ID=9469024

Family Applications (1)

Application Number Title Priority Date Filing Date
FI955584A FI955584A (en) 1994-11-22 1995-11-20 Identification of audio activity

Country Status (10)

Country Link
US (1) US5732141A (en)
EP (1) EP0714088B1 (en)
JP (1) JPH08221097A (en)
AT (1) ATE183598T1 (en)
AU (1) AU698712B2 (en)
CA (1) CA2163295A1 (en)
DE (1) DE69511508T2 (en)
ES (1) ES2136815T3 (en)
FI (1) FI955584A (en)
FR (1) FR2727236B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19716862A1 (en) 1997-04-22 1998-10-29 Deutsche Telekom Ag Voice activity detection
US6556967B1 (en) 1999-03-12 2003-04-29 The United States Of America As Represented By The National Security Agency Voice activity detector
US6381568B1 (en) 1999-05-05 2002-04-30 The United States Of America As Represented By The National Security Agency Method of transmitting speech using discontinuous transmission and comfort noise
EP1304682A1 (en) * 2000-07-05 2003-04-23 Alcatel Distributed speech recognition system
EP1170728A1 (en) * 2000-07-05 2002-01-09 Alcatel System for adaptively reducing noise in speech signals
EP1175058A1 (en) * 2000-07-21 2002-01-23 Alcatel Processor system, and terminal, and network-unit, and method
US7305099B2 (en) * 2003-08-12 2007-12-04 Sony Ericsson Mobile Communications Ab Electronic devices, methods, and computer program products for detecting noise in a signal based on autocorrelation coefficient gradients
EP1729410A1 (en) * 2005-06-02 2006-12-06 Sony Ericsson Mobile Communications AB Device and method for audio signal gain control
JP4516157B2 (en) * 2008-09-16 2010-08-04 パナソニック株式会社 Speech analysis device, speech analysis / synthesis device, correction rule information generation device, speech analysis system, speech analysis method, correction rule information generation method, and program
US9002030B2 (en) 2012-05-01 2015-04-07 Audyssey Laboratories, Inc. System and method for performing voice activity detection

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919479A (en) * 1972-09-21 1975-11-11 First National Bank Of Boston Broadcast signal identification system
JPS597120B2 (en) * 1978-11-24 1984-02-16 日本電気株式会社 speech analysis device
JPS5672499A (en) * 1979-11-19 1981-06-16 Hitachi Ltd Pretreatment for voice identifier
GB2139052A (en) * 1983-04-20 1984-10-31 Philips Electronic Associated Apparatus for distinguishing between speech and certain other signals
US4720802A (en) * 1983-07-26 1988-01-19 Lear Siegler Noise compensation arrangement
JPS62204652A (en) * 1986-03-04 1987-09-09 Nec Corp Audible frequency signal identification system
US4815137A (en) * 1986-11-06 1989-03-21 American Telephone And Telegraph Company Voiceband signal classification
FR2623382B1 (en) * 1987-11-24 1991-05-03 Peugeot Cycles DEVICE FOR FIXING A COVERING, IN PARTICULAR A SEAT COVERING
US5276765A (en) * 1988-03-11 1994-01-04 British Telecommunications Public Limited Company Voice activity detection
EP0548054B1 (en) * 1988-03-11 2002-12-11 BRITISH TELECOMMUNICATIONS public limited company Voice activity detector
US5410632A (en) * 1991-12-23 1995-04-25 Motorola, Inc. Variable hangover time in a voice activity detector

Also Published As

Publication number Publication date
FR2727236A1 (en) 1996-05-24
DE69511508D1 (en) 1999-09-23
AU3793795A (en) 1996-05-30
JPH08221097A (en) 1996-08-30
AU698712B2 (en) 1998-11-05
FI955584A0 (en) 1995-11-20
ATE183598T1 (en) 1999-09-15
FR2727236B1 (en) 1996-12-27
CA2163295A1 (en) 1996-05-23
US5732141A (en) 1998-03-24
EP0714088A1 (en) 1996-05-29
EP0714088B1 (en) 1999-08-18
ES2136815T3 (en) 1999-12-01
DE69511508T2 (en) 2000-07-06

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